It may or may not be in the regs but the NRA thinks it's important
http://www.nraila.org/gun-laws/state-laws/connecticut.aspx
I imagine you want to teach your students how to avoid becoming a test case.
Have fun with the pending turd-storm that every (current and former) CT gun owner on here is about to give you. OC is not legally unsafe in CT, last I recall.
-Mike